Honda TRX450R/ER 480cc Athena Big Bore Cylinder Kit 100mm (06–14)
Honda TRX450R / TRX450ER 480cc Athena 100mm Big Bore Cylinder Kit (2006–2009, 2012–2014)
🛠️ Description
Upgrade your TRX450R/ER with the Athena 480cc Big Bore Race Cylinder Kit for maximum power and durability. Featuring a precision-machined aluminum cylinder with a nickel-carbide bore coating, this kit is designed with larger water jackets for improved cooling and comes with a forged piston to withstand extreme performance demands. Perfect for serious riders and racers.
✅ What’s Included
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100.00 mm aluminum cylinder with nickel-carbide coating
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Forged piston with molybdenum coating
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Specially designed hard-anodized power valves (cannot use OEM)
📦 Fitment
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Honda TRX450ER Electric Start — 2006–2009, 2012–2014
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Honda TRX450R — 2006–2009, 2012
🛡️ Warranty Info
Athena products are backed by the manufacturer against defects in materials and workmanship. Warranty does not cover improper installation, tuning, or racing damage.
🔑 Key Features
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Bore Size: 100.00 mm
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Displacement: 480 cc
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Compression Ratio: 11.6:1
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Designed for 4-stroke Honda TRX450R/ER engines
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Larger water jackets for better heat dissipation
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Race-ready forged piston with moly coating for reduced friction
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Lightweight aluminum cylinder construction with nickel-carbide bore coating
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
